Automating individual devices saves 15–20% on energy. Coordinating all systems into a single Energy Ecosystem with Strategic IoT achieves 35–50% savings — because every energy decision accounts for the context of all systems simultaneously.
Energy Priority Stack: The Order of Energy Source Priority
Strategic IoT systems manage energy according to a clear Priority Stack:
- Solar Generation (free): always use first when available 2. BESS Stored (second cheapest): energy stored from Off-Peak or Solar 3. Off-Peak Grid (low cost): charge BESS and run major appliances from 22:00–09:00 4. On-Peak Grid (expensive): minimize use from 09:00–22:00 on working days 5. Eliminate all unnecessary loads: remove all Standby Load
Time-of-Use Coordination Throughout the Day
Synchronizing each system with MEA/PEA TOU Tariffs: 02:00–06:00 (Deep Off-Peak): - Automatic EV charging (7–11 kW per vehicle) saves THB 60–70% per charge cycle versus daytime charging - Charge BESS to full capacity for On-Peak daytime support 06:00–09:00 (Late Off-Peak): - Pre-condition the home with HVAC before occupants wake (using Off-Peak rates) - Water heater begins heating 09:00–14:00 (Morning On-Peak): - HVAC runs from BESS and Solar, avoiding Grid draw wherever possible - System turns off Standby for all unused devices 14:00–17:00 (Solar Peak + On-Peak): - Solar at maximum output → run washing machine, dishwasher, additional EV charging - Excess generation directed to BESS charging 17:00–22:00 (Evening On-Peak, Highest Demand): - HVAC draws maximum from BESS, minimizing Grid Demand - Automatic Load Shedding: Pool Pump off, Water Heater Setpoint reduced - EV Charger pauses, waiting for Off-Peak
Demand Response Coordination: Prioritizing Loads
When total load exceeds a set Threshold, the system Auto-Sheds in priority order: - Non-Critical (first to shed): Pool Pump, Decorative Lighting, Air Purifier (when AQI is low) - Semi-Critical (reduce first): Water Heater Setpoint, Secondary HVAC Zones - Critical (never shed): Master Bedroom HVAC, Refrigerator, Security System, Medical Devices
Comparative Results
200 sqm Bangkok home, THB 8,000/month electricity bill: - No Automation: THB 8,000/month - Device-Level Automation only (15–20%): THB 6,400–6,800/month - Strategic IoT Multi-System Coordination (35–50%): THB 4,000–5,200/month - Difference between the two approaches: THB 1,200–2,800/month = THB 14,400–33,600/year